Need help finding out what engine is in my bronco i just bought ...intake id says ...D4AE-9425-DA....then under that it has ...4A14....the engine block above the starter is DIAE-6015-A2C....any info will help its locked up and need rebiult

 

Engine has been swapped, the replacement with its D1AE (1971) casting number prefix could be a 400 if it has 8 valve cover bolts per side.

1980 Bronco could have come w/a 300 I-6, 302, 351M or 400.

The 4th digit of the VIN is the engine code, post what it is.

 

It is u15glgd**** ...it does have 8 bolts on the cover and the mech. Fuel pump has the 2 bolts up an down not side to side

 

G = Originally came w/a 351M

351C/351M/400 do not have a timing cover per se, just a flat engine cover plate. The fuel pump bolts to the block, its bolt pattern is @ 6 & 12 o'clock.

400 introduced in 1971 cars, the original block casting number prefix was D1AZ

 

So save to say its a 351m...its locked up so i cant test stroke size

 

351M introduced in 1975 cars, 1977 F100/350, 1978 Bronco...would not have a 1971 block casting number.

351M probably died (not uncommon, the cyl. heads were very prone to cracking), so someone swapped in a 400 from a car since both engines are pretty much the same except for the stroke.

 

Ok so as far as rebuild kits ...im not finding anything for a 400 or 351 m ...any sites have kits for it or is it a part by part buy

 

Ok so i found a sticker under another on the valve cover and it says a 400 ...so now i just have to get into it to c why it wont turn by hand

 

pull the spark plugs out, this will help when trying to turn it over. pull both valve covers also so you can check for bent pushrods or lifters not moving.